diff --git a/negodata/backend/common/database/model/models.py b/negodata/backend/common/database/model/models.py
index 8d4d2d1..6aaf8da 100644
--- a/negodata/backend/common/database/model/models.py
+++ b/negodata/backend/common/database/model/models.py
@@ -230,3 +230,4 @@ class chats(MainTableMixin, MAIN_BASE):
     card_used_yn = Column(Boolean, nullable=True)      # 카드 사용 여부
     indicator_value = Column(Numeric(8, 6), nullable=True)
     card_type = Column(SmallInteger, nullable=True)    # 1=nego_card, 2=wild_card
+    meta = Column(JSONB, nullable=True)                # 말풍선 표현 데이터(script/step/client_step/input_mode/input_options/chat_end)
diff --git a/negodata/front/src/features/quotations/components/QuotationDetailDrawer.tsx b/negodata/front/src/features/quotations/components/QuotationDetailDrawer.tsx
index 82d0145..3673674 100644
--- a/negodata/front/src/features/quotations/components/QuotationDetailDrawer.tsx
+++ b/negodata/front/src/features/quotations/components/QuotationDetailDrawer.tsx
@@ -29,6 +29,7 @@ import {
   normalizeQuotationStatus,
   buildBidSummary,
   mapServerSessionView,
+  sessionStatusLabel,
   mapServerCardView,
 } from '../types';
 
@@ -459,7 +460,7 @@ export function QuotationDetailDrawer({
                         <TableCell className="p-3 text-center">
                           <span
                             className={`inline-flex px-2 py-0.5 rounded-full text-[10px] font-bold ${
-                              sess.status === '협상종료' || sess.status === 'COMPLETED'
+                              sess.status === '협상완료' || sess.status === 'COMPLETED'
                                 ? 'bg-blue-100 text-blue-800 dark:bg-blue-950/20 dark:text-blue-300'
                                 : sess.status === '협상거부' || sess.status === 'REJECTED'
                                   ? 'bg-red-100 text-red-800 dark:bg-red-950/20 dark:text-red-300'
@@ -561,7 +562,7 @@ export function QuotationDetailDrawer({
                   {serverSessions.map((sd) => {
                     const isSelected = sd.session_id === effectiveSessionId;
                     const name = partners.find((p) => p.id === sd.supplier_id)?.name || sd.supplier_id;
-                    const statusLabel = sd.status === 2 ? '협상종료' : sd.status === 3 ? '협상거부' : '협상중';
+                    const statusLabel = sessionStatusLabel(sd.status);
                     return (
                       <button
                         key={sd.session_id}
@@ -576,7 +577,7 @@ export function QuotationDetailDrawer({
                             className={`text-[9px] font-bold px-1.5 py-0.5 rounded ${
                               statusLabel === '협상거부'
                                 ? 'bg-rose-100 text-rose-800 dark:bg-rose-950/30 dark:text-rose-300'
-                                : statusLabel === '협상종료'
+                                : statusLabel === '협상완료'
                                   ? 'bg-blue-100 text-blue-800 dark:bg-blue-950/30 dark:text-blue-300'
                                   : 'bg-emerald-100 text-emerald-800 dark:bg-emerald-950/30 dark:text-emerald-300'
                             }`}
diff --git a/negodata/front/src/features/quotations/hooks/useQuotations.ts b/negodata/front/src/features/quotations/hooks/useQuotations.ts
index 4c111d8..b4e636e 100644
--- a/negodata/front/src/features/quotations/hooks/useQuotations.ts
+++ b/negodata/front/src/features/quotations/hooks/useQuotations.ts
@@ -172,9 +172,11 @@ export function useQuotations() {
     try {
       const res = await createQuotationMutation.mutateAsync({ data: payload });
       const qtId = res?.quotation?.qt_id ?? null;
-      // 서버가 result.success=false 거나 qt_id 가 없으면 실패로 처리(HTTP 200 이어도). 모달은 그대로 유지.
+      // 에러는 응답 패킷 규약(result.success/code/desc + msg)대로 표시한다. HTTP 200 이어도 success=false면 실패.
       if (!res?.result?.success || !qtId) {
-        showToast(`견적 생성 실패: ${res?.result?.desc ?? '서버 오류'}`, 'error');
+        const reason = res?.msg ?? res?.result?.desc ?? '서버 오류';
+        const code = res?.result?.code;
+        showToast(`견적 생성 실패${code ? ` [${code}]` : ''}: ${reason}`, 'error');
         return null;
       }
       // 목록 재조회가 끝나야 새 견적이 정본 목록에 들어온다(상세 자동오픈이 그 행을 찾을 수 있게).
diff --git a/negodata/front/src/features/quotations/types.ts b/negodata/front/src/features/quotations/types.ts
index ef27df8..6220f64 100644
--- a/negodata/front/src/features/quotations/types.ts
+++ b/negodata/front/src/features/quotations/types.ts
@@ -259,7 +259,18 @@ export function buildSessions(
 
 // ── 서버 연동 매퍼(negotiation.sessions / chats / 사용 카드) ──────────────
 
-const SESSION_STATUS_LABEL: Record<number, string> = { 1: '협상중', 2: '협상종료', 3: '협상거부' };
+// 세션상태 코드→라벨. 서버 /v1/enums(session_status) · SHARED_ENUMS.md 5-state 와 동일해야 한다.
+// (정본은 서버 enum — 여기 값은 그걸 미러링한 것이며 드리프트 시 서버 기준으로 맞춘다.)
+export const SESSION_STATUS_LABEL: Record<number, string> = {
+  1: '협상생성',
+  2: '협상중',
+  3: '협상완료',
+  4: '미참여',
+  5: '협상거부',
+};
+// 코드→라벨 단일 진입점. 미정의 코드는 코드 문자열 그대로.
+export const sessionStatusLabel = (code?: number | null): string =>
+  (code != null ? SESSION_STATUS_LABEL[code] : undefined) ?? String(code ?? '');
 const DELIVERY_TYPE_LABEL: Record<number, string> = { 1: '협력사배송', 2: '지정택배배송', 3: '픽업배송' };
 
 // ISO 문자열 → 'YYYY-MM-DD HH:mm'. 빈 값/파싱 실패는 '-'.
diff --git a/negodata/front/src/types.ts b/negodata/front/src/types.ts
index 699ccac..a5f70c7 100644
--- a/negodata/front/src/types.ts
+++ b/negodata/front/src/types.ts
@@ -285,7 +285,7 @@ export interface ChatMessage {
 export interface ChatSession {
   id: string; // matches supplier_id (or supplier.supplier_id)
   partnerName: string;
-  status: 'NEGOTIATING' | 'COMPLETED' | 'REJECTED' | '협상생성' | '협상중' | '협상종료' | '미참여' | '협상거부';
+  status: 'NEGOTIATING' | 'COMPLETED' | 'REJECTED' | '협상생성' | '협상중' | '협상완료' | '미참여' | '협상거부';
   currentBid: number;
   bidTime: string;
   messages: ChatMessage[];